#include "esd-server.h" #include "esd-config.h" #include #include #include #include #include #include #include #ifndef HAVE_NANOSLEEP #include #include #include #endif #include /* Older resolvers don't have gethostbyname2() */ #ifndef HAVE_GETHOSTBYNAME2 #define gethostbyname2(host, family) gethostbyname((host)) #endif /* HAVE_GETHOSTBYNAME2 */ #ifndef SUN_LEN #define SUN_LEN(ptr) ((size_t) (((struct sockaddr_un *) 0)->sun_path) \ + strlen ((ptr)->sun_path)) #endif /* AIX defines this */ #ifndef h_errno extern int h_errno; #endif /* max arguments (argc + tokenized esd.conf) can't be more than this */ #define MAX_OPTS 128 typedef const char *(*audio_devices_t)(void); typedef int (*audio_open_t)(void); typedef void (*audio_close_t)(void); typedef void (*audio_pause_t)(void); typedef void (*audio_flush_t)(void); typedef int (*audio_write_t)( void *buffer, int buf_size ); typedef int (*audio_read_t)( void *buffer, int buf_size ); audio_devices_t impl_esd_audio_devices = esd_audio_devices; audio_open_t impl_esd_audio_open = esd_audio_open; audio_close_t impl_esd_audio_close = esd_audio_close; audio_pause_t impl_esd_audio_pause = esd_audio_pause; audio_flush_t impl_esd_audio_flush = esd_audio_flush; audio_write_t impl_esd_audio_write = esd_audio_write; audio_read_t impl_esd_audio_read = esd_audio_read; #define esd_audio_devices impl_esd_audio_devices #define esd_audio_open impl_esd_audio_open #define esd_audio_close impl_esd_audio_close #define esd_audio_pause impl_esd_audio_pause #define esd_audio_flush impl_esd_audio_flush #define esd_audio_write impl_esd_audio_write #define esd_audio_read impl_esd_audio_read #ifdef DRIVER_ARTS #include "audio_arts.c" #endif /*******************************************************************/ /* esd.c - prototypes */ void set_audio_buffer( void *buf, esd_format_t format, int magl, int magr, int freq, int speed, int length, long offset ); void clean_exit( int signum ); void reset_signal( int signum ); void reset_daemon( int signum ); int open_listen_socket( const char *hostname, int port ); /* from esd_config.c */ void esd_config_read(void); /*******************************************************************/ /* globals */ int esd_is_owned = 0; /* start without owner, first client claims it */ int esd_is_locked = 1; /* if owned, will prohibit foreign sources */ char esd_owner_key[ESD_KEY_LEN]; /* the key that locks the daemon */ int esd_on_standby = 0; /* set to ignore incoming audio data */ int esdbg_trace = 0; /* show warm fuzzy debug messages */ int esdbg_comms = 0; /* show protocol level debug messages */ int esdbg_mixer = 0; /* show mixer engine debug messages */ int esd_buf_size_octets = 0; /* size of audio buffer in bytes */ int esd_buf_size_samples = 0; /* size of audio buffer in samples */ int esd_sample_size = 0; /* size of sample in bytes */ int esd_beeps = 1; /* whether or not to beep on startup */ int listen_socket = -1; /* socket to accept connections on */ int esd_trustval = -1; /* be paranoid, don't trust the owner of ESD_UNIX_SOCKET_DIR */ int esd_autostandby_secs = -1; /* timeout before releasing the audio device, disabled <0 */ time_t esd_last_activity = 0; /* seconds since last activity */ int esd_on_autostandby = 0; /* set when auto paused for auto reawaken */ int esd_use_tcpip = 0; /* use tcp/ip sockets instead of unix domain */ int esd_terminate = 0; /* terminate after the last client exits */ int esd_public = 0; /* allow connects from hosts other than localhost */ int esd_spawnpid = 0; /* The PID of the process that spawned us (for use by esdlib only) */ int esd_spawnfd = 0; /* The FD of the process that spawned us (for use by esdlib only) */ #if defined ENABLE_IPV6 int esd_use_ipv6 = 0; /* We need it in accept () to know if we use AF_NET or AF_INET6*/ #endif static char *programname = NULL; /*******************************************************************/ /* create the startup tones for the fun of it */ void set_audio_buffer( void *buf, esd_format_t format, int magl, int magr, int freq, int speed, int length, long offset ) { int i; float sample; float kf = 2.0 * 3.14 * (float)freq / (float)speed; unsigned char *uc_buf = (unsigned char *)buf; signed short *ss_buf = (signed short *)buf; /* printf( "fmt=%d, ml=%d, mr=%d, freq=%d, speed=%d, len=%ld\n", format, magl, magr, freq, speed, length ); */ switch ( format & ESD_MASK_BITS ) { case ESD_BITS8: for ( i = 0 ; i < length ; i+=2 ) { sample = sin( (float)(i+offset) * kf ); uc_buf[i] = 127 + magl * sample; uc_buf[i+1] = 127 + magr * sample; } break; case ESD_BITS16: /* assume same endianness */ for ( i = 0 ; i < length ; i+=2 ) { sample = sin( (float)(i+offset) * kf ); ss_buf[i] = magl * sample; ss_buf[i+1] = magr * sample; } break; default: fprintf( stderr, "unsupported format for set_audio_buffer: 0x%08x\n", format ); exit( 1 ); } return; } /*******************************************************************/ /* handle signals properly */ void reset_daemon( int signum ) { int tumbler; ESDBG_TRACE( printf( "(ca) resetting sound daemon on signal %d\n", signum ); ); /* reset the access rights */ esd_is_owned = 0; esd_is_locked = 1; /* scramble the stored key */ srand( time(NULL) ); for ( tumbler = 0 ; tumbler < ESD_KEY_LEN ; tumbler++ ) { esd_owner_key[ tumbler ] = rand() % 256; } /* close the clients */ while ( esd_clients_list != NULL ) { erase_client( esd_clients_list ); } /* free samples */ while ( esd_samples_list != NULL ) { esd_sample_kill( esd_samples_list->sample_id, 1 ); erase_sample( esd_samples_list->sample_id, 1 ); } /* reset next sample id */ esd_next_sample_id = 1; /* reset signal handler, if not called from a signal, no effect */ signal( SIGHUP, reset_daemon ); } void clean_exit(int signum) { /* just clean up as best we can and terminate from here */ esd_client_t * client = esd_clients_list; /* fprintf( stderr, "received signal %d: terminating...\n", signum );*/ /* free the sound device */ esd_audio_close(); /* close the listening socket */ close( listen_socket ); /* close the clients */ while ( client != NULL ) { close( client->fd ); client = client->next; } if (!esd_use_tcpip) { unlink(ESD_UNIX_SOCKET_NAME); rmdir(ESD_UNIX_SOCKET_DIR); } /* trust the OS to clean up the memory for the samples and such */ exit( 0 ); } void reset_signal(int signum) { /* fprintf( stderr, "received signal %d: resetting...\n", signum );*/ signal( signum, reset_signal); return; } static int esd_connect_unix(void) { struct sockaddr_un socket_unix; int socket_out = -1; int curstate = 1; /* create the socket, and set for non-blocking */ socket_out = socket( AF_UNIX, SOCK_STREAM, 0 ); if ( socket_out < 0 ) return -1; /* this was borrowed blindly from the Tcl socket stuff */ if ( fcntl( socket_out, F_SETFD, FD_CLOEXEC ) < 0 ) { close (socket_out); return -1; } if ( setsockopt( socket_out, SOL_SOCKET, SO_REUSEADDR, &curstate, sizeof(curstate) ) < 0 ) { close (socket_out); return -1; } /* set the connect information */ socket_unix.sun_family = AF_UNIX; strncpy(socket_unix.sun_path, ESD_UNIX_SOCKET_NAME, sizeof(socket_unix.sun_path)); if ( connect( socket_out, (struct sockaddr *) &socket_unix, SUN_LEN(&socket_unix) ) < 0 ) return -1; return socket_out; } /*******************************************************************/ /* safely create directory for socket Code inspired by trans_mkdir from XFree86 source code For more credits see xc/lib/xtrans/Xtransutil.c. */ int safe_mksocketdir(void) { struct stat dir_stats; #if defined(S_ISVTX) #define ESD_UNIX_SOCKET_DIR_MODE (S_IRUSR|S_IWUSR|S_IXUSR|\ S_IRGRP|S_IXGRP|\ S_IROTH|S_IXOTH|S_ISVTX) #else #define ESD_UNIX_SOCKET_DIR_MODE (S_IRUSR|S_IWUSR|S_IXUSR|\ S_IRGRP|S_IXGRP|\ S_IROTH|S_IXOTH) #endif if (mkdir(ESD_UNIX_SOCKET_DIR, ESD_UNIX_SOCKET_DIR_MODE) == 0) { if (chmod(ESD_UNIX_SOCKET_DIR, ESD_UNIX_SOCKET_DIR_MODE) != 0) { return -1; } return 0; } /* If mkdir failed with EEXIST, test if it is a directory with the right modes, else fail */ if (errno == EEXIST) { #if !defined(S_IFLNK) && !defined(S_ISLNK) #define lstat(a,b) stat(a,b) #endif if (lstat(ESD_UNIX_SOCKET_DIR, &dir_stats) != 0) { return -1; } if (S_ISDIR(dir_stats.st_mode)) { int updateOwner = 0; int updateMode = 0; int updatedOwner = 0; int updatedMode = 0; /* Check if the directory's ownership is OK. */ if ((dir_stats.st_uid != 0) && (dir_stats.st_uid != getuid())) updateOwner = 1; /* * Check if the directory's mode is OK. An exact match isn't * required, just a mode that isn't more permissive than the * one requested. */ if ( ~ESD_UNIX_SOCKET_DIR_MODE & (dir_stats.st_mode & ~S_IFMT)) updateMode = 1; #if defined(S_ISVTX) if ((dir_stats.st_mode & S_IWOTH) && !(dir_stats.st_mode & S_ISVTX)) updateMode = 1; #endif #if defined(HAVE_FCHOWN) && defined(HAVE_FCHMOD) /* * If fchown(2) and fchmod(2) are available, try to correct the * directory's owner and mode. Otherwise it isn't safe to attempt * to do this. */ if (updateMode || updateOwner) { int fd = -1; struct stat fdir_stats; if ((fd = open(ESD_UNIX_SOCKET_DIR, O_RDONLY)) != -1) { if (fstat(fd, &fdir_stats) == -1) { return esd_trustval; } /* * Verify that we've opened the same directory as was * checked above. */ if (!S_ISDIR(fdir_stats.st_mode) || dir_stats.st_dev != fdir_stats.st_dev || dir_stats.st_ino != fdir_stats.st_ino) { return esd_trustval; } if (updateOwner && fchown(fd, getuid(), getgid()) == 0) updatedOwner = 1; if (updateMode && fchmod(fd, ESD_UNIX_SOCKET_DIR_MODE) == 0) updatedMode = 1; close(fd); } } #endif if (updateOwner && !updatedOwner) { fprintf(stderr, "esd: Failed to fix owner of %s.\n", ESD_UNIX_SOCKET_DIR); if (esd_trustval) fprintf(stderr, "Try -trust to force esd to start.\n"); return esd_trustval; } if (updateMode && !updatedMode) { fprintf(stderr, "esd: Failed to fix mode of %s to %04o.\n", ESD_UNIX_SOCKET_DIR, ESD_UNIX_SOCKET_DIR_MODE); if (esd_trustval) fprintf(stderr, "Try -trust to force esd to start.\n"); return esd_trustval; } return 0; } } /* In all other cases, fail */ return -1; } /*******************************************************************/ /* returns the listening socket descriptor */ int open_listen_socket(const char *hostname, int port ) { /*********************/ /* socket test setup */ #if defined (ENABLE_IPV6) struct addrinfo hints, *res, *result = NULL; #endif struct sockaddr_in socket_addr; struct sockaddr_un socket_unix; int socket_listen = -1; struct linger lin; size_t socket_len = 0; struct sockaddr *saddr = NULL; struct hostent *resolved; /* create the socket, and set for non-blocking */ if (esd_use_tcpip) { #if defined(ENABLE_IPV6) if(have_ipv6()) { memset(&hints, 0, sizeof(hints)); hints.ai_socktype = SOCK_STREAM; /* If host name is set then bind to its first address */ if (hostname) { if (getaddrinfo(hostname, NULL, &hints, &result) != 0) { fprintf (stderr,"Unable to resolve the host\n"); return (-1); } for (res = result; res; res = res->ai_next) if(res->ai_family != AF_INET || res->ai_family != AF_INET6) break; if(res->ai_family == AF_INET) { ((struct sockaddr_in *)res->ai_addr)->sin_port = htons(port); esd_use_ipv6 = 0; } if(res->ai_family == AF_INET6) { ((struct sockaddr_in6 *)res->ai_addr)->sin6_port = htons(port); esd_use_ipv6 = 1; } socket_listen = socket(res->ai_family, SOCK_STREAM, 0); saddr = res->ai_addr; socket_len = res->ai_addrlen; } else { struct sockaddr_in6 socket6_addr; memset(&socket6_addr, 0, sizeof(struct sockaddr_in6)); socket6_addr.sin6_family = AF_INET6; socket6_addr.sin6_port = htons(port); if (esd_public) socket6_addr.sin6_addr = in6addr_any; else socket6_addr.sin6_addr = in6addr_loopback; socket_listen = socket(AF_INET6, SOCK_STREAM, 0); saddr = (struct sockaddr *)&socket6_addr; socket_len = sizeof(socket6_addr); esd_use_ipv6 = 1; } } else #endif { /* set the listening information */ memset(&socket_addr, 0, sizeof(struct sockaddr_in)); socket_addr.sin_family = AF_INET; socket_addr.sin_port = htons( port ); /* if hostname is set, bind to its first address */ if (hostname) { if (!(resolved=gethostbyname2(hostname, AF_INET))) { return -1; } memcpy(&(socket_addr.sin_addr), resolved->h_addr_list[0], resolved->h_length); } else if (esd_public) socket_addr.sin_addr.s_addr = htonl( INADDR_ANY ); else socket_addr.sin_addr.s_addr = htonl( INADDR_LOOPBACK ); socket_listen = socket(AF_INET, SOCK_STREAM, 0); saddr = (struct sockaddr *)&socket_addr; socket_len = sizeof(socket_addr); } } else { if (safe_mksocketdir()) { fprintf(stderr, "esd: Esound sound daemon unable to create unix domain socket:\n" "%s\n" "The socket is not accessible by esd.\n" "Exiting...\n", ESD_UNIX_SOCKET_NAME); exit(1); } else { if (esd_connect_unix() >= 0) { /* not allowed access */ fprintf(stderr, "esd: Esound sound daemon already running or stale UNIX socket\n" "%s\n" "This socket already exists indicating esd is already running.\n" "Exiting...\n", ESD_UNIX_SOCKET_NAME); exit(1); } } unlink(ESD_UNIX_SOCKET_NAME); socket_listen=socket(AF_UNIX, SOCK_STREAM, 0); } if (socket_listen < 0) { fprintf(stderr,"Unable to create socket\n"); return( -1 ); } if (fcntl(socket_listen, F_SETFL, O_NONBLOCK) < 0) { fprintf(stderr,"Unable to set socket to non-blocking\n"); return( -1 ); } /* set socket for linger? */ lin.l_onoff=1; /* block a closing socket for 1 second */ lin.l_linger=100; /* if data is waiting to be sent */ if ( setsockopt( socket_listen, SOL_SOCKET, SO_LINGER, &lin, sizeof(struct linger) ) < 0 ) { fprintf(stderr,"Unable to set socket linger value to %d\n", lin.l_linger); return( -1 ); } { int n = 1; setsockopt(socket_listen, SOL_SOCKET, SO_REUSEADDR, &n, sizeof(n)); /* if it fails, so what */ } if ( esd_use_tcpip ) { if ( bind( socket_listen, saddr, socket_len ) != 0 ) { fprintf(stderr,"Unable to bind port %d\n", port ); exit(1); } #if defined (ENABLE_IPV6) if ( result ) freeaddrinfo ( result ); #endif } else { mode_t old_umask; old_umask = umask(0); socket_unix.sun_family=AF_UNIX; strncpy(socket_unix.sun_path, ESD_UNIX_SOCKET_NAME, sizeof(socket_unix.sun_path)); if ( bind( socket_listen, (struct sockaddr *) &socket_unix, SUN_LEN(&socket_unix) ) < 0 ) { fprintf(stderr,"Unable to connect to UNIX socket %s\n", ESD_UNIX_SOCKET_NAME); if (!esd_use_tcpip) { unlink(ESD_UNIX_SOCKET_NAME); rmdir(ESD_UNIX_SOCKET_DIR); } exit(1); } umask(old_umask); } if (listen(socket_listen,16)<0) { fprintf(stderr,"Unable to set socket listen buffer length\n"); if (!esd_use_tcpip) { unlink(ESD_UNIX_SOCKET_NAME); rmdir(ESD_UNIX_SOCKET_DIR); } exit(1); } return socket_listen; } /*******************************************************************/ /* daemon eats sound data, without playing anything, return boolean ok */ int esd_server_standby(void) { int ok = 1; /* only bother if we're not already on standby */ if ( !esd_on_standby ) { ESDBG_TRACE( printf( "setting sound daemon to standby\n" ); ); /* TODO: close down any recorders, too */ esd_on_standby = 1; esd_audio_close(); } return ok; } /*******************************************************************/ /* daemon goes back to playing sound data, returns boolean ok */ int esd_server_resume(void) { int ok = 1; /* only bother if we're already on standby */ if ( esd_on_standby ) { ESDBG_TRACE( printf( "resuming sound daemon\n" ); ); /* reclaim the audio device */ if ( esd_audio_open() < 0 ) { /* device was busy or something, return error, try again later */ ok = 0; } else { /* turn ourselves back on */ esd_on_standby = 0; esd_on_autostandby = 0; esd_forced_standby = 0; } } return ok; } /*******************************************************************/ int main ( int argc, char *argv[] ) { /***************************/ /* Enlightened sound Daemon */ int esd_port = ESD_DEFAULT_PORT; int length = 0; int arg = 0; int itmp; void *output_buffer = NULL; char *hostname=NULL; char *endptr; int fd0; int max_fds; /* from esd_config.c */ extern char esd_spawn_options[]; extern char esd_default_options[]; extern int esd_no_spawn; int esd_spawning; /* for merging argv and esd.conf */ char tmp_str[2*LINEBUF_SIZE] = ""; int num_opts = 0; char *opts[MAX_OPTS]; char *tok; int base; /* begin test scaffolding parameters */ /* int format = AFMT_U8; AFMT_S16_LE; */ /* int stereo = 0; */ /* 0=mono, 1=stereo */ int default_rate = ESD_DEFAULT_RATE, default_buf_size = ESD_BUF_SIZE; int i, j, freq=440; int magl, magr; int first = 1; int default_format = ESD_BITS16 | ESD_STEREO; /* end test scaffolding parameters */ programname = *argv; #ifdef DRIVER_ARTS artschk(); #endif /* read in esd.conf, ~/.esd.conf, ESD_SPAWN_OPTIONS or ESD_OPTIONS*/ esd_config_read(); /* copy default options */ strncat (tmp_str, esd_default_options, LINEBUF_SIZE); /* has server been spawned */ esd_spawning = 0; if (!esd_no_spawn && (argc > 1)) { for (i = 1; i < argc - 1 ; i++) { if (argv[i] && strcmp("-spawnfd", argv[i]) == 0) { esd_spawning = 1; break; } } } /* copy esd_spawn_options to tmp_str because of strtok */ if (esd_spawning) { strncpy(tmp_str, esd_spawn_options, LINEBUF_SIZE); } /* add esd.conf options */ num_opts = 0; tok = DO_STRTOK(tmp_str, " "); while (tok && num_opts < MAX_OPTS) { opts[num_opts] = tok; num_opts++; tok = DO_STRTOK(NULL, " "); } /* now add argv to the end of opts, so command line args take * precedence over config options. we don't add argv[0] */ base = num_opts; for (i = 0; i < argc - 1 && num_opts < MAX_OPTS; i++) { opts[base + i] = argv[i+1]; num_opts++; } /* parse all args */ for ( arg = 0 ; arg < num_opts ; arg++ ) { if ( !strcmp( opts[ arg ], "-d" ) ) { if ( ++arg != num_opts ) { esd_audio_device = opts[ arg ]; if ( !esd_audio_device ) { esd_port = ESD_DEFAULT_PORT; fprintf( stderr, "- could not read device: %s\n", opts[ arg ] ); } fprintf( stderr, "- using device %s\n", esd_audio_device ); } } else if ( !strcmp( opts[ arg ], "-port" ) ) { if ( ++arg != num_opts ) { esd_port = atoi( opts[ arg ] ); if ( !esd_port ) { esd_port = ESD_DEFAULT_PORT; fprintf( stderr, "- could not read port: %s\n", opts[ arg ] ); } fprintf( stderr, "- accepting connections on port %d\n", esd_port ); } } else if ( !strcmp( opts[ arg ], "-bind" ) ) { if ( ++arg != num_opts ) { hostname = opts[ arg ]; } fprintf( stderr, "- accepting connections on port %d\n", esd_port ); } else if ( !strcmp( opts[ arg ], "-b" ) ) { fprintf( stderr, "- server format: 8 bit samples\n" ); default_format &= ~ESD_MASK_BITS; default_format |= ESD_BITS8; } else if ( !strcmp( opts[ arg ], "-r" ) ) { if ( ++arg != num_opts ) { default_rate = atoi( opts[ arg ] ); if ( !default_rate ) { default_rate = ESD_DEFAULT_RATE; fprintf( stderr, "- could not read rate: %s\n", opts[ arg ] ); } fprintf( stderr, "- server format: sample rate = %d Hz\n", default_rate ); } } else if ( !strcmp( opts[ arg ], "-as" ) ) { if ( ++arg != num_opts ) { esd_autostandby_secs = strtol ( opts[arg], &endptr, 10); if ( !esd_autostandby_secs && (!endptr || !*endptr) ) { esd_autostandby_secs = ESD_DEFAULT_AUTOSTANDBY_SECS; fprintf( stderr, "- could not read autostandby timeout: %s\n", opts[ arg ] ); } /* fprintf( stderr, "- autostandby timeout: %d seconds\n", esd_autostandby_secs );*/ } #ifdef ESDBG } else if ( !strcmp( opts[ arg ], "-vt" ) ) { esdbg_trace = 1; fprintf( stderr, "- enabling trace diagnostic info\n" ); } else if ( !strcmp( opts[ arg ], "-vc" ) ) { esdbg_comms = 1; fprintf( stderr, "- enabling comms diagnostic info\n" ); } else if ( !strcmp( opts[ arg ], "-vm" ) ) { esdbg_mixer = 1; fprintf( stderr, "- enabling mixer diagnostic info\n" ); #endif } else if ( !strcmp( opts[ arg ], "-nobeeps" ) ) { esd_beeps = 0; } else if ( !strcmp( opts[ arg ], "-beeps" ) ) { esd_beeps = 1; } else if ( !strcmp( opts[ arg ], "-unix" ) ) { esd_use_tcpip = 0; } else if ( !strcmp( opts[ arg ], "-tcp" ) ) { esd_use_tcpip = 1; } else if ( !strcmp( opts[ arg ], "-public" ) ) { esd_public = 1; } else if ( !strcmp( opts[ arg ], "-promiscuous" ) ) { esd_is_owned = 1; esd_is_locked = 0; } else if ( !strcmp( opts[ arg ], "-terminate" ) ) { esd_terminate = 1; } else if ( !strcmp( opts[ arg ], "-noterminate" ) ) { esd_terminate = 0; } else if ( !strcmp( opts[ arg ], "-spawnpid" ) ) { if ( ++arg < num_opts ) esd_spawnpid = atoi( opts[ arg ] ); } else if ( !strcmp( opts[ arg ], "-spawnfd" ) ) { if ( ++arg < num_opts ) esd_spawnfd = atoi( opts[ arg ] ); } else if ( !strcmp( opts[ arg ], "-trust" ) ) { esd_trustval = 0; } else if ( !strcmp( opts[ arg ], "-v" ) || !strcmp( opts[ arg ], "--version" ) ) { fprintf(stderr, "Esound version " VERSION "\n"); exit (0); } else if ( !strcmp( opts[ arg ], "-h" ) || !strcmp( opts[ arg ], "--help" ) ) { fprintf( stderr, "Esound version " VERSION "\n\n"); fprintf( stderr, "Usage: esd [options]\n\n" ); fprintf( stderr, " -v --version print version information\n" ); fprintf( stderr, " -d DEVICE force esd to use sound device DEVICE\n" ); fprintf( stderr, " -b run server in 8 bit sound mode\n" ); fprintf( stderr, " -r RATE run server at sample rate of RATE\n" ); fprintf( stderr, " -as SECS free audio device after SECS of inactivity (-1 to disable)\n" ); fprintf( stderr, " -unix use unix domain sockets instead of tcp/ip\n" ); fprintf( stderr, " -tcp use tcp/ip sockets instead of unix domain\n" ); fprintf( stderr, " -public make tcp/ip access public (other than localhost)\n" ); fprintf( stderr, " -promiscuous start unlocked and owned (disable authenticaton) NOT RECOMMENDED\n" ); fprintf( stderr, " -terminate terminate esd daemon after last client exits\n" ); fprintf( stderr, " -noterminate do not terminate esd daemon after last client exits\n" ); fprintf( stderr, " -nobeeps disable startup beeps\n" ); fprintf( stderr, " -beeps enable startup beeps\n" ); fprintf( stderr, " -trust start esd even if use of %s can be insecure\n", ESD_UNIX_SOCKET_DIR ); #ifdef ESDBG fprintf( stderr, " -vt enable trace diagnostic info\n" ); fprintf( stderr, " -vc enable comms diagnostic info\n" ); fprintf( stderr, " -vm enable mixer diagnostic info\n" ); #endif fprintf( stderr, " -port PORT listen for connections on PORT (only for tcp/ip)\n" ); fprintf( stderr, " -bind ADDRESS binds to ADDRESS (only for tcp/ip)\n" ); fprintf( stderr, "\nPossible devices are: %s\n", esd_audio_devices() ); exit( 0 ); } else { fprintf( stderr, "unrecognized option: %s\n", opts[ arg ] ); } } /* cd to / */ chdir ("/"); /* close all open file descriptors */ max_fds = getdtablesize(); for(i=0;i 0 /* || esd_monitor */ ) { /* do_sleep = 0; */ if ( !esd_on_standby ) { /* standby check goes in here, so esd will eat sound data */ /* TODO: eat a round of data with a better algorithm */ /* this will cause guaranteed timing issues */ /* TODO: on monitor, why isn't this a buffer of zeroes? */ /* esd_audio_write( output_buffer, esd_buf_size_octets ); */ esd_audio_write( output_buffer, length ); /* esd_audio_flush(); */ /* this is overkill */ esd_last_activity = time( NULL ); } } else { /* should be pausing just fine within wait_for_clients_and_data */ /* if so, this isn't really needed */ /* be very quiet, and wait for a wabbit to come along */ #if 0 if ( !do_sleep ) { ESDBG_TRACE( printf( "pausing in esd.c\n" ); ); } do_sleep = 1; esd_audio_pause(); #endif } /* if someone's monitoring the sound stream, send them data */ /* mix_players, above, forces buffer to zero if no players */ /* this clears out any leftovers from recording, below */ if ( esd_monitor_list && !esd_on_standby && length ) { /* if ( esd_monitor_list && !esd_on_standby ) { */ monitor_write( output_buffer, length ); } /* if someone's recording the sound stream, send them data */ if ( esd_recorder_list && !esd_on_standby ) { length = esd_audio_read( output_buffer, esd_buf_size_octets ); if ( length ) { length = recorder_write( output_buffer, length ); esd_last_activity = time( NULL ); } } if ( esd_on_standby ) { #ifdef HAVE_NANOSLEEP struct timespec restrain; restrain.tv_sec = 0; /* funky math to make sure a long can hold it all, calulate in ms */ restrain.tv_nsec = (long) esd_buf_size_samples * 1000L / (long) esd_audio_rate / 4L; /* divide by two for stereo */ restrain.tv_nsec *= 1000000L; /* convert to nanoseconds */ nanosleep( &restrain, NULL ); #else struct timeval restrain; restrain.tv_sec = 0; /* funky math to make sure a long can hold it all, calulate in ms */ restrain.tv_usec = (long) esd_buf_size_samples * 1000L / (long) esd_audio_rate / 4L; /* divide by two for stereo */ restrain.tv_usec *= 1000L; /* convert to microseconds */ select( 0, 0, 0, 0, &restrain ); #endif } } /* while ( 1 ) */ close (listen_socket); /* how we'd get here, i have no idea, should only exit on signal */ clean_exit( -1 ); exit( 0 ); }